audio_player.h

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/*
 * Copyright 2015 The Android Open Source Project
 * Copyright 2015-2025 Savoir-faire Linux Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#pragma once
 
#include "audio_common.h"
#include "buf_manager.h"
#include "noncopyable.h"
 
#include <sys/types.h>
#include <SLES/OpenSLES_Android.h>
 
#include <mutex>
 
namespace jami {
namespace opensl {
 
class AudioPlayer
{
    // buffer queue player interfaces
    SLObjectItf outputMixObjectItf_;
    SLObjectItf playerObjectItf_;
    SLPlayItf playItf_;
    SLAndroidSimpleBufferQueueItf playBufferQueueItf_;
 
    jami::AudioFormat sampleInfo_;
    AudioQueue* freeQueue_ {nullptr};                            // user
    AudioQueue* playQueue_ {nullptr};                            // user
    AudioQueue devShadowQueue_ {DEVICE_SHADOW_BUFFER_QUEUE_LEN}; // owner
    sample_buf silentBuf_;
 
    EngineCallback callback_ {};
 
public:
    explicit AudioPlayer(jami::AudioFormat sampleFormat,
                         size_t bufSize,
                         SLEngineItf engine,
                         SLint32 streamType);
    ~AudioPlayer();
    NON_COPYABLE(AudioPlayer);
 
    bool start();
    void stop();
    bool started() const;
 
    void setBufQueue(AudioQueue* playQ, AudioQueue* freeQ);
    void processSLCallback(SLAndroidSimpleBufferQueueItf bq);
    void playAudioBuffers(unsigned count);
    void registerCallback(EngineCallback cb) { callback_ = cb; }
    size_t dbgGetDevBufCount();
 
    std::mutex m_;
};
 
} // namespace opensl
} // namespace jami